57 global error handling in angular

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comprehensive guide to robust global error handling in angular (v16+)

error handling is a crucial aspect of building resilient and user-friendly angular applications. a well-implemented global error handling strategy can significantly improve the user experience by preventing unexpected crashes, providing informative error messages, and allowing you to log and monitor errors for debugging and future improvements.

this tutorial provides a comprehensive guide to global error handling in angular, focusing on strategies that work effectively from angular 16 onwards. it covers various approaches, best practices, and code examples to help you build robust error handling mechanisms into your applications.

**why global error handling matters:**

* **prevent unhandled exceptions:** without global error handling, uncaught exceptions can crash your application, leaving users with a broken experience and no clue what went wrong.
* **consistent error reporting:** provides a uniform way to handle errors across the entire application, ensuring consistency in error presentation and logging.
* **improved user experience:** instead of a blank screen or cryptic error message, you can display user-friendly messages that guide them on what to do next.
* **centralized logging and monitoring:** enables you to log errors in a central location, making it easier to track and debug issues in production.
* **graceful degradation:** allows your application to degrade gracefully when errors occur, minimizing the impact on the user's workflow.
* **developer productivity:** by centralizing error handling logic, you reduce code duplication and make it easier to maintain and update your error handling strategy.

**core concepts:**

1. **`errorhandler` interface:** this is the core interface in angular's error handling mechanism. by providing a custom implementation of `errorhandler`, you can intercept and handle all errors that occur within your angular application.

2. **`httpinterceptor`:* ...

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